Power tool toys

ABSTRACT

Toys that simulate power tools, including pull-string motors that drive mechanisms which vibrate the housing and make noises. One toy has a housing representing an electric drill and a rotatable shaft in the shape of a drill chuck and drill. An eccentric weight is mounted in the chuck to vibrate the drill when the output shaft is rapidly rotated.

Unite States Patent [191 Morin et al.

[ 1 Jan. 14, 1975 POWER TOOL TOYS Inventors: Marius J. Morin; James D.Hegel, both of Torrance; Vere S. l-Iampy, Lawndale; Richard L. Shield,Long Beach-all of Calif.

Assignee: Mattel/ lm Hawthorne, Calif.

Filed: Dec. 18, 1972 Appl. No.2 316,161

U.S. Cl. 46/39, 46/175 Int. Cl A63h 33/30 Field of Search 46/39, 175,211, 189, 117,

References Cited UNITED STATES PATENTS 2/1954 Huard et al 46/211 2/1957Allen 46/39 4/1958 Steiner et a1 46/39 3,036,402 5/1962 Hamilton....46/39 3,160,983 12/1964 Smith et al..... 46/247 X 3,190,031 6/1965Tengelitsch.... 46/39 3,491,479 l/l970 Carter 46/39 FOREIGN PATENTS ORAPPLICATIONS 1,037,910 8/1966 Canada 46/247 Primary Examiner-Louis G.Mancene Assistant Examiner-J. Q. Lever Attorney, Agent, or Firm-Max 1E.Shirk [57] ABSTRACT Toys that simulate power tools, includingpull-string motors that drive mechanisms which vibrate the housing andmake noises. One toy has a housing representing an electric drill and arotatable shaft in the shape of a drill chuck and drill. An eccentricweight is mounted in the chuck to vibrate the drill when the outputshaft is rapidly rotated.

8 Claims, 12 Drawing Figures PATENTEB JAN 1 41975 SHEET 3 0F 4 PATENTEDJAN 1 4 I975 SHEET U B? 4 POWER TOOL TOYS BACKGROUND OF THE INVENTIONThis invention relates to toys that simulate power driven equipment.

Toys that simulate common tools and appliances that children aregenerally not allowed to use, often make entertaining playthings. Commonpower driven devices such as electric drills and electric mixers areoften very interesting to children not only because they are used onlyby adults, but also because they have rapid movements and make noise.Toys that simulate such articles can be made especially interesting byincluding apparatus for making noises and movements appropriate to thesimulated tool and even in an exaggerated amount.

SUMMARY OF THE INVENTION In accordance with one ambodiment of thepresent invention, a toy simulating real life power driven equipment isprovided, which simulates movements and noises created by the real lifeequipment as well as having a similar appearance. The toy includes apullstring motor that drives an output shaft with an eccentric Weightthereon that vibrates the toy housing. A multi-tooth wheel fixed to theshaft is engaged by a leaf spring that extends to an acousticalamplifier for making noise as the shaft rotates and the toy housingvibrates. A manually controlled trigger can engage a toothead wheel onthe output shaft to prevent shaft rotation until a child operatesatrigger or the like that simulates the switch on the real life tool.

In one toy, which simulates an electric drill, the output shaft has anouter portion that has the shape of a drill chuck and drill bit. Aweight is mounted in the drill chuck at one side of the axis of rotationto vibrate the drill. The location of the weight in the chuck results inwobbling of the drill bit that simulates movements of real drills due totorques often encountered in drilling.

Another toy represents an electric mixer wherein at least one of themixing blades is thicker than the others to create vibrations when theblades rotate. Still another toy represents a chain saw, and includes anenclosed shaft carrying a large eccentric weight to vibrate the housing.The pull-string of the chain saw motor extends with a rearwarddirectional component to simulate the starting cord on a real gasolineengine chain saw. Another toy represents a helicopter with an unbalancedrotor for vibrating the helicopter housing. Yet another toy represents asewing machine with a pressure foot and needle that oscillate up anddown and which hit the housing on every downstroke to generate noise.

The novel features of the invention are set forth with particularity inthe appended claims. The invention will best be understood from thefollowing description when read in conjunction with the accompanyingdrawmgs.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially sectional sideview of a toy electric drill constructed in accordance with a firstembodiment of the present invention;

FIG. 2 is a view taken on the line 2-2 of FIG. 1;

FIG. 3 is a view taken on the line 3-3 of FIG. 1; FIG. 4 is a view takenon the line 4-4 of FIG. 1;

FIG. 5 is a partially sectional side view of a toy chain saw constructedin accordance with another embodiment of the invention;

FIG. 6 is an enlarged, cross-sectional view taken on the line 6-6 ofFIG. 5;

FIG. 7 is a partially sectional side view of a toy electric mixerconstructed in accordance with still another embodiment of theinvention;

FIG. 8 is an enlarged, cross-sectional view taken on the line 8-8 ofFIG. 7;

FIG. 9 is a view taken on the line 9-9 of FIG. 7;

FIG. 10 is a sectional side view of a toy helicopter constructed inaccordance with yet another embodiment of the invention;

FIG. 11 is a perspective view of a toy sewing machine constructed inaccordance with a still further embodiment of the invention; and

FIG. 12 is a partial, enlarged perspective view of the sewing machine ofFIG. 11, showing the operating mechanism thereof.

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1-4 illustrate a toydrill 10 which includes a housing 12 representing that of a commonelectric drill, and an output shaft 14. The output shaft 14 projectsthrough a hole 16 in housing 12, and has an outer portion 18 in theshape ofa drill chuck 20 with a drill 22 therein. A motor 23 mountedwithin the housing is coupled to the output shaft 14 to rapidly rotateit. The motor is of the pull-string type which is operated by pullingand releasing a'string 24.

A child can operate the drill by pulling a knob 26 attached to thestring 24 to wind the motor 23. The child then grasps a handle 28 formedon the housing, and places his index finger around a trigger switch ortrigger 30. When the child depresses the: trigger 30, the triggerreleases the shaft 14 to permit it to rapidly rotate. When the shaftrotates, the tool provides a realistic, if not exaggerated, simulationof an operating drill. The drill chuck 20 and drill 22 are seen torapidly rotate while large vibrations can be felt and considerablerealistic noise is heard.

Vibrations of the toy are produced by a weight 32 that is mounted in thedrill chuck 20 near the radially outer portion thereof. The chuck 20provides a good mounting location for the eccentric weight 32 becausethe chuck is an enlarged portion of the output shaft that must beprovided anyway for a realistic appearance. In addition, vibrationsinduced at the location of the chuck 20 provide an especially realisticmovement, because the weight 32 at an overhanging shaft location urgesthe output shaft 14 to rapidly wobble as it rotates. The drill 22 andchuck 20 therefore appear to rapidly vibrate in a manner simulatingvibrations resulting from operation of a real electric drill.

A realistic noise is generated by a multitoothed wheel 36 which is fixedto the output shaft 14. A resilient member 38, of a material such asspring steel, has an outer end in the path of the teeth 40, so that theresilient member is rapidly vibrated when the shaft rotates. Theresilient member 38 has an opposite end fixed to a thin and wide-areadiaphragm or speaker 42 which vibrates a considerable volume of air sothat a loud I noise is created. Holes 44 are formed in the housing tostructed of a material which is easily formed by injection molding, suchas polyethylene foam. This material tends to dampen vibrations, and theseparate speaker 42 is therefore utilized to amplify vibrations insteadof attaching an end of the resilient member 38 to the housing. Thetrigger 30, which can start and stop the tool, has an arm 46 whichengages the multi-toothed wheel 36 to normally prevent output shaftrotation. The trigger 30, which is pivotably mounted at 48 on thehousing, has a spring'arm 50 that bears against a flange 52 of thehousing. The trigger can be pivoted to the position 30a when a childoperates the trigger, to disengage the arm 46 from the multi-toothedwheel and permit the motor 23 to rapidly rotate the output shaft.

The motor 23 which drives the output shaft includes a string drum 54 onwhich an inner end of the pullstring 24 is mounted. The drum 54 is fixedto a motor shaft 56 that is rotatably mounted on a motor frame 58. Acoil spring 60, which has opposite ends respectively fixed to the shaft56 and to the frame 58, is wound when the pull-string 24 is pulled. Thewound spring then urges the shaft 56 to rotate in an opposite directionto rewind the string on the drum 54.

The motor shaft 56 is coupled to the output shaft 14 through a motorgear 62 fixed to the motor shaft 56, an idler gear assembly including anidler pinion 64 and idler gear 66 that are both fixed to an idler shaft68, and an output gear 70 that is fixed to the output shaft 14. If allof the gears of this gear train were constantly engaged, then the outputshaft 14 would be rotated when the pull-string 24 were pulled. Thiswould be undesirable because it would make pulling of the string moredifficult and because the trigger 30 would then have to be helddepressed while the string were pulled. To prevent constant engagementof the gears, the motor housing 58 is provided with a pair of slots 72(FIG. 3) which the idler shaft 68 can slide along. This permits theidler shaft 68 to slide from a first position wherein the idler gear 66is disengaged with the output gear 70, to a second position wherein theidler gear at 66a (FIG. 4) is engaged with the output gear 70.

The slot 72 which receives the idler shaft 68, is oriented along animaginary line 74 which extends along a radius to the axis of rotation32 of the output gear 70 and circumferentially about the axis 76 of themotor gear 62. Accordingly, the idler pinion 64 is always engaged withthe motor gear 62, but the idler gear 66 can move into and out ofengagement with the output gear 70.

The direction in which the pull-string 24 is wound about the pulley 54is chosen so that, when the pullstring is pulled, the motor gear 62rotates in the direction of arrow 78. The teeth of motor gear 62 thenmove past the idler pinion in the direction of arrow 80 to urge theidler gear 64 away from the drive shaft gear 70. When the string 24 isreleased, the coil spring 60 rotates the motor gear 62 in the directionof arrow 82, which results in the teeth of the motor gear 62 moving pastthe idler pinion 64 in the direction of arrow 84. This causes the idlershaft 68 to shift its position so that the idler gear 66 engages thedrive shaft pinion 70 to rotate the drive shaft-Thus, the motor isautomatically disengaged and engaged with the output shaft 14 tofacilitate motor winding. The idler shaft and gear assembly thereforeacts not only as a speed increasing gear train but also as a directionsensitive clutch.

FIGS. 5 and 6 illustrate a toy chain saw which simulates a real chainsaw not only in appearance, but in the generation of realistic noisesand the creation of realistic vibrations. The toy includes a housing 1025 largely simulating that of a chain saw, including a forwardlyextending simulated chain 104 and a rearwardly extending handle 106. Apull-string motor 108 is mounted in the housing to drive a shaft 110. Alarge weight 111 is mounted eccentrically on the shaft to vibrate thehousing when the shaft rapidly rotates. A toothed wheel 112 is alsomounted on the shaft, and a resilient member 114 that extends to aspeaker 118 engages the toothed wheel to generate noise. A trigger 120,pivotably mounted on the housing at 122, has a 5 brake arm 124 normallyengaging a projection on shaft 110 normal thereto. This preventsrotation of the output shaft. When the trigger is squeezed against thebiasing of a spring arm 128, the output shaft is freed for rotation bythe motor 108. i

The housing is provided with an upstanding handle of a type which isoften found on chain saws. The pull-string 132 of the motor extends witha rearward directional component from the location 134 where it passesthrough the housing. This is a direction simulating the direction inwhich a starting cord generally extends from the gasoline engine of achain saw. A child can wind the motor by pulling on a knob 136 attachedto pull string 132 while holding the handle 130 of the chain saw, in amanner simulating the starting of the gasoline engine of a real chainsaw. The child may then hold the top handle 130 in one hand and therearward handle 106 in his other hand and squeeze the trigger 120 tocause the chain saw to operate. The toy chain saw then vibrates andmakes considerable noise.

FIGS. 7-9 illustrate a toy electric mixer 140 which simulates a realmixer. The toy mixer 140 includes a housing 142 representing an electricmixer housing, and an output shaft 144 projecting through the housing.The output shaft 144 has an inner portion within the housing, which ismotor driven, and an outer portion representing multiple mixing blades.As illustrated in FIG. 8, some of the blades 146, 148 are of greatermass than other blades 150, 152. These heavier blades 146, 148 areconcentrated on one side of the output shaft to form an eccentric weightthat unbalances the shaft. The mixer includes a motor 154 similar tothat of the motor 23 in FIG. 1, with a drawstring 156 extending throughthe housing. The motor drives an output gear 158 on the output shaft torotate it.

The upper end of the output shaft has a single tooth 160 extendingtherefrom which can be engaged to prevent output shaft rotation. Amanually operated switch button 162 is slideably mounted on the housingand has a toothed wheel 164 at its lower end for engaging the tooth 160of the output shaft. When the button 162 is depressed against thebiasing of a pair of leaf springs 166, the teeth at 164 move down andout of engagement with the tooth 160 of the shaft to permit output 60which has an end portion biased against a multishaft rotation. Noise ismade by a resilient member 168' blades of lightweight material, and alsoincludes a weight 198 in one of the rotors for unbalancing the outputmember to make the craft vibrate when the output member rotates. The toyalso includes a multi-toothed wheel 200'and a leaf spring 202 forengaging the teeth of the wheel to create noise.

FIGS. 11 and 12 illustrate a toy sewing machine 210 which producesmovements, vibrations, and noise simulating a real sewing machine. Thesewing machine includes a housing 212 with an upper housing portion 214,a lower housing portion 216, and a column 218 joining the upper andlower housing portions. A reciprocal member 220 is moveably mounted inthe housing and has a lower portion representing a pressure foot 222 anda needle 224, the foot 222 and needle 224 being integral. The reciprocalmember 220 has a large bearing hole 226 which receives an eccentricportion 2280f a drive shaft 230. The drive shaft 230 is driven by apull-string member 232 which is of the type shown at 23 in FIG. 1 andwhich is mounted in the housing. Motor 232 has a pull-string 234extending through the column portion 218 of the housing. When the motorrotates the drive shaft 230, the eccentric portion 228 moves the middleportion of the reciprocal member 220 in a circle. This causes thepressure foot 222 and needle 224 to move, and some of the movement is inan up and down direction. At each rotationof the drive shaft 230, thereciprocal assembly 220 moves down low enough so that it strikes thelower portion 216 of the housing to create a tapping sound. The lowerend or tip 236 of the needle 224 is the portion that actually contactsthe lower housing portion 216, and a relatively sharp sound is made. Therapid movement of the reciprocal member 220 creates vibrations, andthese vibrations and the tapping sound simulate the operation of a realsewing machine.

Thus, the invention provides toys that simulate power driven devices notonly in appearance, but in the creation of vibrations and noise. Thosedevices such as drills, mixers, and airplanes which have rotary outputscan be made to vibrate by unbalancing the rotary output member. A devicewith a reciprocal output, such as a sewing machine, can be made tovibrate by rapid oscillation of a-needle and other apparatus fixed toit, such as a simulated pressure foot. Noise can be created by the useof a resilient member that is repeatedly flicked by a multi-toothedwheel fixed to the drive shaft, and the sounds can be amplified by theuse of a wide area acoustic amplifier or speaker that is coupled to theresilient member. In the case of a reciprocal device such as a sewingmachine, noise can be created by permitting the reciprocal member tobottom-out on the housing.

Although particular embodiments of the invention have been described andillustrated herein, it is recognized that modifications and variationsmay readily occur to those skilled in the art and consequently it isintended that the claims be interpreted to cover such modifications andequivalents.

What is claimed is:

1. A toy simulating a power driven device with a moveable output member,comprising:

1. a housing of substantially the same shape as that of said powerdriven device;

2. a motor mounted in said housing;

3. an output member moveably mounted on said housing and projectingtherethrough, the output portion projecting out of the housingrepresenting said output member in said useful power driven device andthe output portion within the housing being coupled to the motor formovement thereby, at least one of said output portions including meansfor vibrating said housing when said output portions are moved, at leastone of said output portions being rotatably mounted and carrying aneccentric weight for vibrating said housing;

4. a toothed member fixed to said output member within said housing; and

5. a manually operable trigger pivotably mounted on said housing andhaving a catch arm moveable into and out of engagement with said toothedmember to control rotation of said output member, sais motor including:

A. a rotatably mounted string drum;

B. a pull string having an inner end on the drum and an outer endprojecting through the housing;

C. a coil spring coupled to the drum; and

D. means coupling the drum to said output member, so that when thestring is pulled and released the spring can rotate at least a portionof said output member.

2. The toy described in claim 21 including:

a speaker member having a thin and large area portion for vibrating alarge volume of air; and

a resilient member having a first portion engaged with the speakermember and a second portion biased into engagement with said toothedmember for actuation thereby.

3. A toy simulating a power driven device with a moveable output member,comprising:

1. a housing of substantially the same shape as that of said powerdriven device;

2. a motor mounted in said housing, said motor including:

A. a rotatably mounted string drum;

B. a pull string having an inner end on the drum and an outer endprojecting through the housing;

C. a coil spring coupled to the drum;

D. a motor gear and an output gear respectively coupled to said stringdrum and to said output member;

E. an idler shaft;

F. an idler gear assembly mounted on said idler shaft; and

G. means defining an idler bearing slot extending substantially along aradius to the axis of rotation of said output gear and circumferentiallyabout the motor gear, said idler shaft slideable along said slot so theidler gear assembly remains constantly engaged with the motor gear butmay engage or disengage the output gear, said string being wound in adirection on the drum so that when the string is pulled off the drum theteeth of the motor gear move past the idler gear assembly in a directionto urge the idler gear assembly away from the output gear, and when thestring rewinds onto the drum the teeth of the motor gear move past theidler gear assembly in a direction to urge the idler gear assemblytowards the output gear, whereby to enable pulling of the string withoutrotating the output gear; and

3. an output member moveably mounted on said housing and projectingtherethrough, the output portion projecting out of the housingrepresenting said output member in said useful power driven device andthe output portion within the housing being coupled to the motor formovement thereby, at least one of said output portions including meansfor vibrating said housing when said output portions are moved.

4. A toy simulating an electric drill comprising:

a housing in the form of an electric drill housing;

an output shaft assembly rotatably mounted on the housing and havinginner and outer portions respectively inside and outside the housing;and

a motor coupled to the shaft assembly to rotate it;

said outer portion of said shaft assembly being in the shape of a drillchuck with adrill extending therefrom, and said outer portion having aweight mounted eccentric to the axis of rotation of the shaft assembly.

5. The toy described in claim 4 wherein:

said weight is mounted in said drill chuck.

6. The toy described in claim-4 wherein:

said housing has a handle extending perpendicular to the drive shaftassembly;

said motor includes a coil spring coupled to said output shaft assembly,a string drum, means for coupling the string drum to the output shaftassembly, and a string extending through the handle and having a knobthereon; and

said output shaft assembly includes a toothed wheel;

and including a trigger pivotally mounted on the housing and having anarm moveable between first and second positions respectively engaged anddisengaged with the output shaft assembly;

a large area speaker; and

a resilient leaf extending between the speaker and the toothed wheel.

7. A toy simulating a power tool comprising:

a housing simulating the housing of a power tool, said housing beingconstructed of lightweight foam material and having at least one holetherein;

a wind up motor mounted in the housing, including a string drum, a pullstring having an inner portion coupled to the drum and an outer portionextending through the housing, a spring coupled to the drum, and anoutput shaft coupled to the spring to be rapidly rotated by it;

an eccentric weight coupled to the shaft to vibrate the housing;

a manually operable member biased towards a first position in engagementwith the shaft to prevent shaft rotation when the string is pulled towind the spring, and manually moveable to a second position out ofengagement with the shaft to permit its rotation;

a toothed wheel coupled to the shaft to be rotated by a thin and largearea speaker member mounted in said housing and facing the hole; and

a leaf spring member extending between the speaker member and thetoothed wheel, to be alternately deflected and released thereby.

8. A toy simulating a power tool comprising:

1. a housing simulating the housing of a power tool;

2. a wind up motor mounted in the housing, including a string drum, apull string having an inner portion coupled to the drum and an outerportion extending through the housing, a spring coupled to the drum, andan output shaft coupled to the spring to be rapidly rotated by it, saidspring being constantly connected to said string drum, said motorincluding: A. motor and output gears respectively coupled to said stringdrum and to said output shaft;

B. an idler gear assembly which includes an idlershaft and an idler.gear mounted on said idler shaft; and

C. means defining an idler bearing slot extending substantially along aradius to the axis of rotation of said output gear and along acircumferential imaginary line concentric with the first gear, saididler shaft slideable along said slot so the idler shaft assemblyremains constantly engaged with the motor gear but can engage ordisengage the output gear, said string being wound in a direction on thedrum so that when the string is pulled off the drum the teeth of themotor gear move past the idler gear in a direction to urge the idlergear away from the output gear, and when the string rewinds onto thedrum theteeth of the motor gear move past the idler gear in a directionto urge the idler gear towards the output gear,

whereby to enable pulling of the string without rotating the outputshaft;

3. an eccentric weight coupled to the shaft to vibrate the housing; and4. a manually operable member biased towards a first position inengagement with the shaft to prevent shaft rotation and manuallymoveable to a second position out of engagement with the shaft to permitits rotation.

1. A toy simulating a power driven device with a moveable output member,comprising:
 1. a housing of substantially the same shape as that of saidpower driven device;
 2. a motor mounted in said housing;
 3. an outputmember moveably mounted on said housing and projecting therethrough, theoutput portion projecting out of the housing representing said outputmember in said useful power driven device and the output portion withinthe housing being coupled to the motor for movement thereby, at leastone of said output portions including means for vibrating said housingwhen said output portions are moved, at least one of said outputportions being rotatably mounted and carrying an eccentric weight forvibrating said housing;
 4. a toothed member fixed to said output memberwithin said housing; and
 5. a manually operable trigger pivotablymounted on said housing and having a catch arm moveable into and out ofengagement with said toothed member to control rotation of said outputmember, sais motor including: A. a rotatably mounted string drum; B. apull string having an inner end on the drum and an outer end projectingthrough the housing; C. a coil spring coupled to the drum; and D. meanscoupling the drum to said output member, so that when the string ispulled and released the spring can rotate at least a portion of saidoutput member.
 2. a motor mounted in said housing;
 2. a motor mounted insaid housing, said motor including: A. a rotatably mounted string drum;B. a pull string having an inner end on the drum and an outer endprojecting through the housing; C. a coil spring coupled to the drum; D.a motor gear and an output gear respectively coupled to said string drumand to said output member; E. an idler shaft; F. an idler geAr assemblymounted on said idler shaft; and G. means defining an idler bearing slotextending substantially along a radius to the axis of rotation of saidoutput gear and circumferentially about the motor gear, said idler shaftslideable along said slot so the idler gear assembly remains constantlyengaged with the motor gear but may engage or disengage the output gear,said string being wound in a direction on the drum so that when thestring is pulled off the drum the teeth of the motor gear move past theidler gear assembly in a direction to urge the idler gear assembly awayfrom the output gear, and when the string rewinds onto the drum theteeth of the motor gear move past the idler gear assembly in a directionto urge the idler gear assembly towards the output gear, whereby toenable pulling of the string without rotating the output gear; and 2.The toy described in claim 1 including: a speaker member having a thinand large area portion for vibrating a large volume of air; and aresilient member having a first portion engaged with the speaker memberand a second portion biased into engagement with said toothed member foractuation thereby.
 2. a wind up motor mounted in the housing, includinga string drum, a pull string having an inner portion coupled to the drumand an outer portion extending through the housing, a spring coupleD tothe drum, and an output shaft coupled to the spring to be rapidlyrotated by it, said spring being constantly connected to said stringdrum, said motor including: A. motor and output gears respectivelycoupled to said string drum and to said output shaft; B. an idler gearassembly which includes an idler shaft and an idler gear mounted on saididler shaft; and C. means defining an idler bearing slot extendingsubstantially along a radius to the axis of rotation of said output gearand along a circumferential imaginary line concentric with the firstgear, said idler shaft slideable along said slot so the idler shaftassembly remains constantly engaged with the motor gear but can engageor disengage the output gear, said string being wound in a direction onthe drum so that when the string is pulled off the drum the teeth of themotor gear move past the idler gear in a direction to urge the idlergear away from the output gear, and when the string rewinds onto thedrum the teeth of the motor gear move past the idler gear in a directionto urge the idler gear towards the output gear, whereby to enablepulling of the string without rotating the output shaft;
 3. A toysimulating a power driven device with a moveable output member,comprising:
 3. an eccentric weight coupled to the shaft to vibrate thehousing; and
 3. an output member moveably mounted on said housing andprojecting therethrough, the output portion projecting out of thehousing representing said output member in said useful power drivendevice and the output portion within the housing being coupled to themotor for movement thereby, at least one of said output portionsincluding means for vibrating said housing when said output portions aremoved.
 3. an output member moveably mounted on said housing andprojecting therethrough, the output portion projecting out of thehousing representing said output member in said useful power drivendevice and the output portion within the housing being coupled to themotor for movement thereby, at least one of said output portionsincluding means for vibrating said housing when said output portions aremoved, at least one of said output portions being rotatably mounted andcarrying an eccentric weight for vibrating said housing;
 4. a toothedmember fixed to said output member within said housing; and
 4. A toysimulating an electric drill comprising: a housing in the form of anelectric drill housing; an output shaft assembly rotatably mounted onthe housing and having inner and outer portions respectively inside andoutside the housing; and a motor coupled to the shaft assembly to rotateit; said outer portion of said shaft assembly being in the shape of adrill chuck with a drill extending therefrom, and said outer portionhaving a weight mounted eccentric to the axis of rotation of the shaftassembly.
 4. a manually operable member biased towards a first positionin engagement with the shaft to prevent shaft rotation and manuallymoveable to a second position out of engagement with the shaft to permitits rotation.
 5. The toy described in claim 4 wherein: said weight ismounted in said drill chuck.
 5. a manually operable trigger pivotablymounted on said housing and having a catch arm moveable into and out ofengagement with said toothed member to control rotation of said outputmember, sais motor including: A. a rotatably mounted string drum; B. apull string having an inner end on the drum and an outer end projectingthrough the housing; C. a coil spring coupled to the drum; and D. meanscoupling the drum to said output member, so that when the string ispulled and released the spring can rotate at least a portion of saidoutput member.
 6. The toy described in claim 4 wherein: said housing hasa handle extending perpendicular to the drive shaft assembly; said motorincludes a coil spring coupled to said output shaft assembly, a stringdrum, means for coupling the string drum to the output shaft assembly,and a string extending through the handle and having a knob thereon; andsaid output shaft assembly includes a toothed wheel; and including atrigger pivotally mounted on the housing and having an arm moveablebetween first and second positions respectively engaged and disengagedwith the output shaft assembly; a large area speaker; and a resilientleaf extending between the speaker and the toothed wheel.
 7. A toysimulating a power tool comprising: a housing simulating the housing ofa power tool, said housing being constructed of lightweight foammaterial and having at least one hole therein; a wind up motor mountedin the housing, including a string drum, a pull string having an innerportion coupled to the drum and an outer portion extending through thehousing, a spring coupled to the drum, and an output shaft coupled tothe spring to be rapidly rotated by it; an eccentric weight coupled tothe shaft to vibrate the housing; a manually operable member biasedtowards a first position in engagement with the shaft to prevent shaftrotation when the string is pulled to wind the spring, and manuallymoveable to a second position out of engagement with the shaft to permitits rotation; a toothed wheel coupled to the shaft to be rotated by it;a thin and large area speaker member mounted in said housing and facingthe hole; and a leaf spring member extending between the speaker memberand the toothed wheel, to be alternately deflected and released thereby.8. A toy simulating a power tool comprising: